Bluetooth is an open wireless technology standard for exchanging data over short distances (using short wavelength radio transmissions) from fixed and mobile devices, creating personal area networks (PANs) with high levels of security.

bandwith for bluetooth: 1 bit at a time
2.4 ghz


Range

Range is application specific and although a minimum range is mandated by the Core Specification, there is not a limit and manufacturers can tune their implementation to support the use case they are enabling.
Range may vary depending on class of radio used in an implementation:

  • Class 3 radios – have a range of up to 1 meter or 3 feet
  • Class 2 radios – most commonly found in mobile devices – have a range of 10 meters or 33 feet
  • Class 1 radios – used primarily in industrial use cases – have a range of 100 meters or 300 feet